Md Nazmul Islam

Does a fan use more electricity on high speed? Have you ever thought about it? Let us first learn the working procedure of an electric fan by hearing a story. Energy drink and the speed of an electric fan Think about a scenario first. Suppose, you want to run on the...

Top 5 battery questions and answers - some in general questions regarding Mobile Battery. Mobile battery is a surprising thing. Here, are some of the answers to the most common questions. 1. How can the mobile phone detect how much the battery has been charged? A story In order to learn about...

The use of air conditioners is very extensive in our daily lives. It serves us on a daily basis. Air conditioner usage is mostly in the office, industry, bank, shopping mall, households, and hotels. Today we will learn about the top air conditioning problems and solutions. During summer and...

Have you ever wondered what causes power to go out for a few seconds? There is a saying that, good with good and bad with bad. Electricity maintains this law. This electricity for the welfare of the people but if you can't control this electricity tragedy can be...

More or less every electrical engineer bears a question in mind that, why is the AC signal frequency always 50/60 Hz? Why not use other values? Europe, Africa, Asia all produce this same amount of AC signal frequency. So, let us discuss this topic today. But, before that get...

Once, I was walking down the road. There I saw some people establishing a new transformer. I became curious and went towards it to see how it is done. Then, I took a look at the plate. I saw something written like Dny11 on its body. Then, I wondered,...

The Economic Choice of Transmission Voltage - One day, I was teaching about transmission lines in a class. Then a student asked me a question, "Sir, how does the PGCB (Power Grid Company of Bangladesh) fix the transmission voltage as 132, 230, or 400 KiloVolt?" The question was logical....

AC-DC and Filament of an electric bulb | A love Story - Ever thought about, AC-DC and Filament of an electric bulb. Why can't DC be used instead of AC? Let's learn from a love story, shall we? It’s raining outside. The atmosphere is gloomy. Holding a cup of hot...

Why stones are used in Substation instead of Sand or Grass? Ever thought, why stones are used in substation instead of sand or grass? The reason is simple. But, can't be explained easily. What comes to mind when we hear about substations? Transformer, circuit breaker, lightning arrester, etc devices come...

What does mAh mean in a battery - What do we mean by the mAh rating? Especially, in the case of mobile batteries, what does it stand for? Today, I will discuss a very exciting topic with you all. At the age of 4G, there is hardly any person without...

Direction of current flow and electron flow- why are they opposite to each other? No matter how much research we do about voltage and current, people just can't get enough of it. The people are always curious regarding it. Moreover, most curiosity arises about why electron and current flow opposite...

Common misconceptions about Electricity and the solution to it - let's find out. Electricity is a part and parcel of our daily lives. We can not go a single day without it. During the summer times, we can not stay for a single while without fans and air conditioners....